Seeking advice for a slow-motion video device

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The slowest of the slow motion video provided by my Nikon Z6 is recorded at 120 frames per second (Nikon calls it 30 x 4) and I would prefer more frames to achieve slower display of the motion. What would be the least expensive device that could make this happen?

I would use the device only to examine the paths of the drops and their collisions when using my drop art photography kit. The playback only needs to be on the device used to capture the video, so there is no need for HDMI or anything fancy needed for viewing the videos on other devices. For the same reason, I don't care about the image quality of the playback, only that it can be played at considerably slower motion than when using my Z6.

If the likely solution is a phone's camera, I could be convinced to use the phone for the other purposes smart phones are used. My current phone is the cheapest I could find at the time because I generally use it only to make phone calls and to text except for perhaps in the future I could use a phone for making slow motion videos. I don't enjoy using a phone to browse the Internet or to do any of the other things people so often do using their phone.

Make sense? Thanks in advance for any recommendations or thoughts you folks would want me to consider!
 
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I only know a little about this subject, which I actually learned when I had difficulty getting 120fps video to play normally, rather than in SloMo. Here's what I know:

A smart phone will not do better in this area. Any claims by current phones to have SloMo capability faster than 120fps are achieved by frame duplication and interpolation. In many cases, I think they shoot at even less than 120fps.

There are obviously other reasonably affordable imaging devices that specialize in this sort of thing (GoPro comes to mind), but I wonder if you can get to the end result you want by finessing your final rendering and playback speed of videos that can be captured with your existing gear.
 
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A smart phone will not do better in this area. Any claims by current phones to have SloMo capability faster than 120fps are achieved by frame duplication and interpolation.

I've seen videos made on smart phones where the playback is much slower than on my Nikon Z6. I don't care what method is used to achieve it.

I wonder if you can get to the end result you want by finessing your final rendering and playback speed of videos that can be captured with your existing gear.

The Nikon Z6 automatically plays back the 120 fps at a slow motion speed. Is there external software that can play the same file at a slower speed?
 
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I don't care what method is used to achieve it.
If you're examining the path of falling water droplets and the formation following collisions and splashes with the surface, I would think that the addition of interpolated frames could yield misleading results.
Is there external software that can play the same file at a slower speed?
Yes, some (maybe all?) video editing software allow a great deal of flexibility in this area. Adobe Premiere and Pinnacle Studio certainly do (many others exist, but those are the two that I have used).
 
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I've seen videos made on smart phones where the playback is much slower than on my Nikon Z6. I don't care what method is used to achieve it.



The Nikon Z6 automatically plays back the 120 fps at a slow motion speed. Is there external software that can play the same file at a slower speed?
If you are using apple systems, final cut pro certainly allows you to reduce the speed very easily, I would imagine the "free" imovie would as well
 
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I've installed the free version of DaVinci Resolve but can't get it to work as I expected. When I click the Settings icon located in the bottom right corner of the window, the Project Settings window is displayed. When I change the Playback frame rate value and then play the file, it's played at the same speed regardless of whether I increase the frame rate 100%, decrease it 50% or leave it unchanged.

For those of you who know how to use this software, what am I missing?
 
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Sounds like you need to import the video into an editor, then adjust the time frame to 4x. So a 60-second video will then be 240 seconds. Produce the edit and bam.... slo-mo.
 
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Sounds like you need to import the video into an editor, then adjust the time frame to 4x. So a 60-second video will then be 240 seconds. Produce the edit and bam.... slo-mo.

In essence, that's what I thought I was doing with DaVinci Resolve. But something went wrong. I'll eventually get it figured out but was hoping not to have to pour through a manual to learn how to do something so seemingly simple.
 
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I don't use DeVinci, I use PowerDirector. But the process is probably very similar. I just choose the video file in the timeline, click on Tools/Video Speed, then enter 0.25 in the playback speed. That increases the time it takes to play the video by a factor of 4.

SloMo.jpg
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I then Produce the edit and I have a video that took 18½ seconds to record to 1:14 to play back.
 
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I discovered in DaVinci Resolve that there is an automatic playback that slows down the file I made by playing it twice as long. However, it appears I need it to take four times as long and I don't see any way to make that happen.

For anyone interested, that automatic playback is to open the Playback menu and select Play Slow (shortcut Shift+K).
 
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